Just a follow up on the formations and false starts and stuff that everyone seems so invested in. You can see how much the NFL cares about that stuff when you see their 6-man mechanics. In Washington, an official got hurt. So where did the NFL pull coverage from? The line of scrimmage. They would rather have literally nobody there to even look for line of scrimmage fouls it than potentially miss a DH.
Just a note for NCAA, 6 man mechanics we pull the back judge, since there are two other deep guys anyways. Just means one of the deep guys will have to keep their eyes on two receivers instead of one.